Allow sub- prefix in participant labels (#1347)

Author: tsalo

xcp_d/cli/parser.py

@@ -90,6 +90,7 @@ def _build_parser():
         dest='participant_label',
         action='store',
         nargs='+',
+        type=lambda label: label.removeprefix('sub-'),
         help=(
             'A space-delimited list of participant identifiers, or a single identifier. '
             "The 'sub-' prefix can be removed."

xcp_d/tests/test_cli.py

@@ -48,6 +48,7 @@ def test_ds001419_nifti(data_dir, output_dir, working_dir):
         dataset_dir,
         out_dir,
         'participant',
+        '--participant-label=01',
         '--mode=none',
         '--datasets',
         f'aroma={derivs_dir}',
@@ -97,6 +98,7 @@ def test_ds001419_cifti(data_dir, output_dir, working_dir):
         dataset_dir,
         out_dir,
         'participant',
+        '--participant-label=sub-01',
         '--mode=abcd',
         f'-w={work_dir}',
         '--task-id=imagery',